4. On a national test of "mental intensity," u is 20 and the standard deviation 6.28. Students inyour class produce the following scores:25, 26, 34, 14, 33, 29, 22, 18, 16, 13, 21, 20, 22, 21, 34, 30Using the criterion of 0.05 and both tails of the sampling distribution, determine ifyour class is representative of the population.a. State the null and alternative hypotheses.b. Using an alpha = 0.05, what is t (crit)?c. Using SPSS, calculate t (obt) (Use One Sample t test to get this info)d. What should you conclude?ates)E Focus

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.…

Answered: 4. On a national test of "mental…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Similar questions

Suppose you have two samples with the following values: Sample 1: 2, 8, 6, 5, 4, 7, 5, 9, 6 Sample 2: 3, 5, 4, 8, 7, 5, 5, 7,6 For Sample 1, what are the values for: Mean Median Mode Standard Deviation Variance
1. Consider the following sample of numbers: 1, 4, 5, 4, 3, 4, 7, 8, 5, 9, 12, 13, 11, 2. (a) Find the sample mean. (b) Find the sample standard deviation.
A. What is the standard deviation of this population? (2, 3, 6, 8, 11) B. What is the standard deviation of this sample? (3, 4, 5, 7, 8, 8, 9, 12)
Suppose you multiply the data for the duration of hospital stay by 3. a. What is the effect on the median? b. What is the effect on the mode? c. What is the effect on the mean? d. What is the effect on the sample standard deviation?
1. Stephen would like to check if his claim is true upon knowing that the average grade in Mathematics of his class is at least 85%. He got a sample from his classmates listed as follows: 93, 88 , 90,95 , 83, 85, 77 , 78 , 90, 80 a. What statistical tool is suited to determine if his class is true? Why? b. Assume that the distribution is normal, what would Stephen's conclusion be if the level of significance is 5%?
Find the mean, median, mode, range, variance and standard deviation of the following sample data and then interpret the answer. Show the complete solution.
A. What is the mean, median and mode? Separate answers with a single comma, i.e. 3.000,3.000,3.000 b. What is the standard deviation and sample variance? separate answers with a comma, i.e. 3.000,9.000 c.What is the largest value, smallest value and the sum of values? Separate answers with a comma, i.e. 4.543,11.345,46.000
Given the following grades on s test: 86, 92, 100, 93, 89, 95, 79, 98, 68, 62, 71, 75, 88, 86, 93, 81, 100, 86, 96, 52; What is the percentage of scores lying within one standard deviation from the mean? Two standard deviations from the mean? Are these results consistent with what
Salaries for teachers in a particular state have a mean of $ 45000 and a standard deviation of $ 6700. a. If we randomly select 16 teachers from that district, can you determine the sampling distribution of the sample mean? Yes No If yes, what is the name of the distribution? The mean? This is not a decimal or integer value. The standard error? b. If we randomly select 74 teachers from that district, can you determine the sampling distribution of the sample mean? Yes No If yes, what is the name of the distribution? The mean? The standard error? c. For which sample size would I need to know that population distribution of X, teacher salaries, is normal in order to answer? d. Assuming a sample size of 74, what is the probability that the sampling error is within $1000. (In other words, the sample mean is within $1000 of the true mean.) e. Assuming a sample size of 74, what is the 90th percentile for the AVERAGE teacher’s salary? f. Assuming that teacher’s salaries are…
We have the number of recorded children from 20 randomly selected barangays in the Philippines to help us estimate the number of Filipino children aged 12- 23 months who did not receive any vaccinations appropriate for their age. 16, 22, 26, 31, 45, 18, 24, 26, 34, 46, 19, 24, 27, 35, 55, 19, 25, 28, 37, 58 A. Can we compute for the population standard deviation? B. If yes, what is the population standard deviation? Use the computational formula. If no, why not? C. Can we compute for the sample standard deviation? D. If yes, what is the sample standard deviation? Use the computational formula. If no, why not?

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